Butterfly (BFLY) 10% Owner Jonathan M. Rothberg Sells Shares

What Happened Jonathan M. Rothberg, reported as a 10% owner of Butterfly Network (BFLY), sold a total of 4,013,452 shares in open-market transactions from July 14–16, 2026. The filings report four dispositions (weighted-average prices shown): 815,632 shares at $7.72 ($6,294,885), 1,730,319 shares at $7.32 ($12,670,780), 253,867 shares at $7.09 ($1,799,638), and 1,213,634 shares at $7.09 ($8,603,330). Aggregate proceeds reported are about $29.37 million. These were sales (not purchases) and thus are routine dispositions rather than insider buys.

Key Details

• Transaction dates and weighted-average prices: 2026-07-14 (815,632 @ $7.72), 2026-07-15 (1,730,319 @ $7.32), 2026-07-16 (253,867 @ $7.09 and 1,213,634 @ $7.09).
• Total shares sold: 4,013,452; total reported proceeds: ~$29.37M.
• Reported execution price ranges (per footnotes): roughly $6.845 to $8.00 per share across the trades; the per-line prices above are weighted averages and individual executions varied within those ranges.
• The transactions were executed pursuant to a Rule 10b5-1 trading plan adopted March 13, 2026 for estate planning purposes (footnote).
• Footnote: Class B common stock automatically converted into Class A common stock on sale (one-for-one) where applicable.
• Ownership after the transactions is not specified in the provided summary—see the full Form 4 for post-sale holdings.
• Filing timeliness: Form 4 was filed July 16, 2026 covering trades through July 16, 2026 (appears timely under Form 4 rules).
• Additional control disclosure: Dr. Rothberg is manager of several related entities and disclaims beneficial ownership of securities held by those entities except to the extent of his pecuniary interest.

Context

• These were sales under a pre-established 10b5-1 plan (estate planning), which typically means trades were pre-authorized and scheduled rather than ad hoc insider sales. As a 10% owner (large shareholder), Rothberg’s activity reflects a significant disposition of shares but does not necessarily indicate a change in company outlook.